Hi All,
Fedora changed the way core dumps are generated.
These are my notes:
-T
Fedora 28+ core dumps:
As of Fedora 28, core dumps have to be extracted by the administrator
(root):
These commands will give you a list of core dumps
# coredumpctl --reverse list
# ls -l /var/lib/systemd/coredump/
You need the PID of the core dumps parent to create a coe dump:
coredumpctl has a PID column. "--reverse" puts the youngest at the
top:
# coredumpctl --reverse list
TIME PID UID GID SIG COREFILE EXE
Wed 2018-02-21 12:00:46 PST 20759 0 0 6 missing
/opt/Cimcor/CimTrak/CimT
# ls -l /var/lib/systemd/coredump/
-rw-r-----. 1 root root 1622777 May 31 03:04
core.CimTrakServer\x2eb.0.a91f9e4dc86f4e7ea65bd7dbd7eb5429.28086.1527761078000000.lz4
The second to last set of numbers (28086 above) is the PID
To find a particular program's youngest pid (sub program name for
"CimTrak"):
# coredumpctl --reverse list | perl6 -e 'my $x=slurp(); for split
"\n", $x -> $Line {if $Line ~~ / CimTrak / { say $Line.words[4]; last } };'
9405
To extract a core dump:
# coredumpctl dump {PID} --output /tmp/{PID}.core
This will place the Core file will be located in /tmp/
For example:
# coredumpctl dump 9405 --output /tmp/9405.core
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